# \[Solved\] Core Reporting Suuccessfully flashed, but no magenta flashing witnessed **URL:** \ **Category:** Troubleshooting\ **Created:** [March 27, 2015, 10:44pm UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943 "2015-03-27T22:44:40Z")\ **Posts on this page:** 19\ **Page:** 1
**Author:** ![mblackler](https://avatars.discourse-cdn.com/v4/letter/m/bc8723/32.png) [@mblackler](https://community.particle.io/u/mblackler)\ **Post date:** [March 27, 2015, 10:44pm UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/1 "2015-03-27T22:44:40Z")
Hey Guys and Gals! I am flashing my core over the web IDE, with the core selected in the cores dialog that matches with the coreid I got from “spark serial identify”. It says it all goes well. Great. BUT - the core never flashes magenta indicating it is being updated, and nor do the web calls I make to the core indicate my new code has been taken on. Any ideas? I know the build system was having some issues, is this a hangover from this? Best, Matthew ---
**Author:** ![kennethlimcp](https://avatars.discourse-cdn.com/v4/letter/k/c0e974/32.png) [@kennethlimcp](https://community.particle.io/u/kennethlimcp)\ **Post date:** [March 27, 2015, 11:02pm UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/2 "2015-03-27T23:02:08Z")
Is there a breathing cyan dot beside the core in the cores tab? ---
**Author:** ![mblackler](https://avatars.discourse-cdn.com/v4/letter/m/bc8723/32.png) [@mblackler](https://community.particle.io/u/mblackler)\ **Post date:** [March 27, 2015, 11:32pm UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/3 "2015-03-27T23:32:34Z")
Hi, yes - indeed there is. The core itself is breathing normally and I can call it through the API, but it responds as I would expect the old code to respond. ---
**Author:** ![kennethlimcp](https://avatars.discourse-cdn.com/v4/letter/k/c0e974/32.png) [@kennethlimcp](https://community.particle.io/u/kennethlimcp)\ **Post date:** [March 27, 2015, 11:36pm UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/4 "2015-03-27T23:36:15Z")
Try flashing the new code again now 😄 ---
**Author:** ![mblackler](https://avatars.discourse-cdn.com/v4/letter/m/bc8723/32.png) [@mblackler](https://community.particle.io/u/mblackler)\ **Post date:** [March 28, 2015, 4:26am UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/5 "2015-03-28T04:26:00Z")
Tried multiple times again, no joy. Done factory reset and run a serial setup and re-running the flash, I get the same behaviour. I hit build, with the newly registered core selected in the IDE, it says it has flashed successfully - but no magenta flashing. Not sure what avenues are left now. ---
**Author:** ![bko](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/bko/32/20704_2.png) [@bko](https://community.particle.io/u/bko)\ **Post date:** [March 28, 2015, 4:38am UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/6 "2015-03-28T04:38:03Z")
Hi @mblackler When the web IDE says “flashed successfully” it really means that it has sent the binary file to the cloud handler that sends it on to your core. There is no feedback from there back to the web IDE, so as soon as it sends it to the cloud software, it thinks it is done. ---
**Author:** ![mblackler](https://avatars.discourse-cdn.com/v4/letter/m/bc8723/32.png) [@mblackler](https://community.particle.io/u/mblackler)\ **Post date:** [March 28, 2015, 4:58am UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/7 "2015-03-28T04:58:06Z")
Thanks @bko ! So what can typically stop the binary file being pushed from the cloud handler to the spark core? Can the size of the file stop it from getting pushed? Best, Matthew ---
**Author:** ![kennethlimcp](https://avatars.discourse-cdn.com/v4/letter/k/c0e974/32.png) [@kennethlimcp](https://community.particle.io/u/kennethlimcp)\ **Post date:** [March 28, 2015, 9:16am UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/8 "2015-03-28T09:16:42Z")
Factory reset the core and use serial to check the core id. Verify it against your account and connect it to wifi. Try flashing again after that ---
**Author:** ![mblackler](https://avatars.discourse-cdn.com/v4/letter/m/bc8723/32.png) [@mblackler](https://community.particle.io/u/mblackler)\ **Post date:** [March 28, 2015, 10:19pm UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/9 "2015-03-28T22:19:35Z")
Hey @kennethlimcp, I’ve done that, no joy. Can this behavior indicate that the resulting binary was too big? ---
**Author:** ![kennethlimcp](https://avatars.discourse-cdn.com/v4/letter/k/c0e974/32.png) [@kennethlimcp](https://community.particle.io/u/kennethlimcp)\ **Post date:** [March 29, 2015, 1:48am UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/10 "2015-03-29T01:48:07Z")
Do you have **Spark-cli** installed? The Web IDE/ Spark-cli will compile and if the binary is too big there will be an error. So i presume: 1.) The core id is correct 2.) You have managed to flash the core with firmware via OTA before Can you flash the core with the default tinker firmware? Using **Spark-cli** , `spark flash CORE_NAME tinker` ---
**Author:** ![mblackler](https://avatars.discourse-cdn.com/v4/letter/m/bc8723/32.png) [@mblackler](https://community.particle.io/u/mblackler)\ **Post date:** [March 29, 2015, 2:07am UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/11 "2015-03-29T02:07:30Z")
I do indeed have it installed. The core id is correct and I have managed to flash the core with firmware via OTA before. Flashing using tinker works. I then attempt to flash my project directly afterwards, no indications from the core that anything happened. Cheers, Matthew ---
**Author:** ![kennethlimcp](https://avatars.discourse-cdn.com/v4/letter/k/c0e974/32.png) [@kennethlimcp](https://community.particle.io/u/kennethlimcp)\ **Post date:** [March 29, 2015, 2:25am UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/12 "2015-03-29T02:25:23Z")
Are you using the WEB IDE for your project? Try creating a new app with a blink **.ino** file and flash it ---
**Author:** ![jlmcgehee21](https://avatars.discourse-cdn.com/v4/letter/j/85e7bf/32.png) [@jlmcgehee21](https://community.particle.io/u/jlmcgehee21)\ **Post date:** [April 10, 2015, 1:17pm UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/13 "2015-04-10T13:17:25Z")
I’m piggy backing on here, because I’m having the same problem as @mblackler. I just followed the last suggestion of trying to flash the blink.ino file, and the cloud says it flashed successfully, but my core never flashes magenta, and is still breathing cyan. I just got this one in the mail last night, but I have another one that has been a part of my home automation system for about 5 months. I never had these issues with it. ---
**Author:** ![kennethlimcp](https://avatars.discourse-cdn.com/v4/letter/k/c0e974/32.png) [@kennethlimcp](https://community.particle.io/u/kennethlimcp)\ **Post date:** [April 10, 2015, 2:05pm UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/14 "2015-04-10T14:05:15Z")
Can you perform a factory reset, get it back to breathing cyan and try flashing a blank app? ---
**Author:** ![jlmcgehee21](https://avatars.discourse-cdn.com/v4/letter/j/85e7bf/32.png) [@jlmcgehee21](https://community.particle.io/u/jlmcgehee21)\ **Post date:** [April 10, 2015, 11:35pm UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/15 "2015-04-10T23:35:59Z")
I figured out my problem. The Device ID in the web IDE was wrong, even though I had selected the correctly named core. I’m not sure how that could have happened, but it’s fixed now. ---
**Author:** ![lah](https://avatars.discourse-cdn.com/v4/letter/l/e47774/32.png) [@lah](https://community.particle.io/u/lah)\ **Post date:** [October 27, 2015, 9:28am UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/16 "2015-10-27T09:28:15Z")
Hi, Same issue for me… 1 byte differed from correct device ID. I never claimed “manually” core. It looks like a bug. ---
**Author:** ![Dave](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/dave/32/181_2.png) [@Dave](https://community.particle.io/u/Dave)\ **Post date:** [October 27, 2015, 2:18pm UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/17 "2015-10-27T14:18:30Z")
Hi lah, Can you tell me more about the issue you’re seeing? Are you saying you claimed a different device? Thanks! David ---
**Author:** ![lah](https://avatars.discourse-cdn.com/v4/letter/l/e47774/32.png) [@lah](https://community.particle.io/u/lah)\ **Post date:** [October 27, 2015, 4:31pm UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/18 "2015-10-27T16:31:44Z")
Yes, that’s it! I got flash succcessful messages but core never blinked magenta. So I compared cloud device id and real core device id, 1 byte differed… it began with 55ff6d… but was instead 55ff6e lah ---
**Author:** ![Dave](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/dave/32/181_2.png) [@Dave](https://community.particle.io/u/Dave)\ **Post date:** [October 27, 2015, 4:34pm UTC](https://community.particle.io/t/solved-core-reporting-suuccessfully-flashed-but-no-magenta-flashing-witnessed/10943/19 "2015-10-27T16:34:22Z")
Can you try releasing that device, and re-claiming your device and flashing that? Thanks! David